Friday

August 1, 2014

August 1, 2014

Total # Posts: 902

**PHYSICS. **

5. A motor lifts a 12 kg mass to a height of 15 m at a constant velocity in 3.5 s. a) Find the power b) If the motor is only 35% efficient find the input energy.

**Physics**

a motor lifts a 12 kg mass to a height of 15 meters at a content velocity in 3.5 seconds. a) find the power b) if the motor is only 35% efficient find the input energy

**math**

Please Don't spam, don't submit to many question at the same time in different post! We try are best to answer. Thank You! Unknown

**Introduction to oPsychology**

When you drive down the street listening to your car's radio, you may not think about the fact that the music is received by the radio's antenna. Which part of the human neuron serves the same purpose as asn antenna-that is, receiving information?

**english and languge arts**

HURRY I NEED HELP!!!!! where should you insert a colon in this sentence? Interview the following people Dave, barb, Jose, and Mary Ann 1.after following 2. after people 3.after Jose 4. no where i said no where but i dont know

**Algebra**

6/3=2 2 hrs

**Math**

The surface area of a prism is 54 square inches. What is the surface area of a similar prism that is smaller by a scale of 1/3? My answer- 6

**Math**

Can you check my answer, I got 5.92983333

**Math**

Convert- 94 gal/h=______L/min

**Math**

Ms.Sue wouldn't it be 192?

**Math**

Can someone help me with this? Convert: 48lb/gal=____oz/qt

**Science**

How many moles of O2 are needed to make 1.98 moles of SO3?

**science**

how many moles of SO2 are needed to make 3 moles of SO3?

**CALCULUS ECONOMICS**

WRONG s is not -300

**Probability**

1. 0.0384 (5!/5^5) 2. ???

**Probability**

c) 13/24

**Probability**

a) 3/5 b) (2/5)/(3/5)=2/3

**Probability**

pataka rana ug answer.. 1/5 + 2/5=4/5? sure ka ana?

**Math**

oops the percent it 18.4 not 18.45! Sorry

**Math**

Oh! Ok let me try it by dividing only once.

**Math**

It's a percent proportion- is/of = %/100

**Math**

Also~ 18.45 of 880 is what number? My answer- 1.6192

**math**

I got .9052 the 2nd time

**math**

62% of 146 is what number? My answer- 23548.38

**Science**

Thank you this helps a lot!

**Science**

How are volcanoes formed?

**science**

Please help! Thank you!

**science **

What is a mountains origin?

**Math Help**

Please help me solve these two problems and check my answer :) 1. 3x-5+x+2 My answer- X= 17/3 2. 5/6x+1/4= -9/4 my answer- X= -2

**science**

a stone is dropped down a well.it hits th surface of the water after 2seconds.find the depth of water from point where the stone was dropped

**Civics**

Ok thank you very much!:D

**Civics**

So it establishes that the court cannot/will not change the understanding of the law once made unless the decision before an be shown wrong/ in error?

**Civics**

What role do precedents play in our legal system? Help would be appreciated!! :-)

**POL 201**

I need answers for week 2 quiz.

**Physics**

One student generates a short, loud sound of wavelength 0.7576 m. Another student, who is 100 m away, hears the sound exactly 0.300 s later. What is the frequency of this sound? Please help

**Physics please help. **

A ball of Styrofoam (ρ = 100 kg/m3) is totally submerged in water. The ball has a mass of 300.0 g (it could be a pretty big block). What is the volume of the ball? If a string holds the ball when it’s in the water, what’s the tension in the string?

**Social**

What are the for and against arguments for the right to vote?

**Physics Please check my answer**

Well it's a two part system, so the mass is a force that the other mass has to overcome in order to move

**Physics Please check my answer**

Okay, so I've figured this much out on my own, I just need help with the next part. It's a two block system with a friction of .20 a hanging mass of 7.5 kg and mass on the table at 10 kg. I got 3.08 m/s^2 for the acceleration and I got 22.8 N for the tension in the rop...

**science **

Is a bluegill both a decomposer and consumer?

**Physics Please check my answer**

Yes, the rope pulls all of the blocks to the right. Thank you so much for your help.

**Physics Please check my answer**

1. Which of the following are conserved in a totally inelastic collision? Only momentum Only kinetic energy Both momentum and kinetic energy Neither momentum nor kinetic energy <--- It depends on the objects. 2. Two skaters stand face to face. Skater 1 has a mass of 55 kg, ...

**please check this**

I got 225 N/m is this correct?

**physics**

8. A spring is compressed a distance of 0.15 m from its rest position and held in place while a ball of mass 0.150 kg is placed at its end. When the spring is released, the ball leaves the spring traveling at 9.0 m/s. What is the spring constant? 540 N/m 450 N/m 60 N/m 225 N/m...

**Physics help**

I'm trying to calculate the tension in a rope. The two ropes are holding up a picture frame that is 100N, each rope is at a 45 degree angle. I'm trying to find the value of the tension of the 1st rope. Please help

**help!!!!**

8y-6

**science help!**

A satellite is placed in orbit 100 km above the surface of the earth (radius = 6370 km, mass = 5.98 x 1024 kg). If the satellite has a mass of 1500 kg, what is the force of gravity acting on it?

**science please check my answer**

A mass is moving in uniform circular motion under the effects of a centripetal force. If the force is doubled and the radius is cut in half, by what factor will the speed change? It will double. <---- It will be cut in half. It will not change. It will quadruple. It will be...

**maths**

Solve 5x + 3y = 4 3x + 4y = 9 Just a bit confused Please help

**Science help.**

did you answer all correctly?

**physics**

A graduated cylinder is inverted in a very large bucket of water. The depth of the water in the container is 6 m and the top of the bucket is open to the air in the room. The mouth (bottom) of the graduated cylinder is 4 m above the bottom of the container. Due to a pressure d...

**Engineering**

plz... post all the answers you know so that other people will be benefited.....

**Physics Classical Mechanics**

vm = 2.213594362 Q = 0.278168471

**Physics Classical Mechanics**

M/(pi*r^2*(l-h) + 4*pi*R^3/3)

**Physics Classical Mechanics**

f = 1/(2*pi)*sqrt((2*g)/L)

**Physics Classical Mechanics**

T = 2*pi*sqrt((3*M)/(2*k))

**Physics Classical Mechanics**

(a)NL = (m*g*(1-(2*x)/d))/2 NR = (m*g*(1+(2*x)/d))/2 (b)(-2*mu_k*g*x)/d (c)x_0*cos(sqrt((2*mu_k*g)/d)*t)

**Science**

Thank you!

**Science**

What is a example of a scientific law?

**math please help me**

6x + 4(2x + 3) = 34 + 3x 6x + 4(2x) + (4)(3) = 34 + 3x 6x + 8x + 12 = 34 + 3x 14x + 12 = 34 + 3x 12 = 39 + -11x -27/-11 = =11x/-11 2.45 = x

**Math**

The variable W represents the width of a rectangle. The length of the rectangle, L, is 5 less than twice the width. Write an expression for the length of the rectangle in terms of W. Write a simplified expression for the perimeter of the rectangle in terms of W. Find the perim...

**Science **

What substances (Syrup or water) absorb more thermal energy? Why?

**science**

Calculate the time in seconds an Olympic Skier would take to finish a 5,000 meter race at an average velocity of 25 m/s downhill.

**Physics Classical Mechanics**

(a) sqrt(G*M/r_a)

**Music **

What could be done to minimize the commercialism in today’s music scene?

**Science **

what are 4 places where convection is important in a home? {I already have the air conditioner}

**Science**

connexus right ik the answer is c your right goodluck

**Civics**

Ok thank you!

**Civics **

Why was the 14th amendment passed/needed? My answer- To guarantee all former slaves and their children were legally citizens of the USA under the Constitution.

**Civics**

ah ok! Thank you!

**Civics**

So The Fourteenth Amendment was proposed by Congress in 1866 and ratified by the states in 1868?

**Civics**

When was the 14th amendment passed?

**Language arts**

in a way...

**Language arts**

Oh so our world/community are like the shadow because we all or most of us believe there will be riches when we die?

**Language arts**

So the shadow it basically telling the Knight that there is no possibly to get there. So the shadow is us?

**Language arts**

I don't think the last part is correct...

**Language arts**

Yes i have read it, he is looking for Eldorado, he does not find it. the shadow tells him that it is over the Mountains of the Moon, and down the valley of the shadow. (I'm not sure about this answer) Humans today behave the same way because... we spend to much time lookin...

**Language arts**

In "Eldorado" by Edgar Allan Poe how does our world and community relate to the knights world & community? Please help!! >.<

**Civics**

What does the very last sentence of Animal Farm suggest?

**Civics**

Oh and one more question -1. How did Boxer help dig his own grave, so to speak?

**Civics**

Oh i got the answer now! Thank, you!

**Civics **

In animal farm how do the pigs get the other animals to support their use of the milk and apples?

**SORRY FOR THE INCONVENIENCE!!**

Please accept this as an apology. I wasn't trying to spam this forum I truly believe it's great and I am grateful for the amount of tutors who volunteer their time!! I was very shocked that's all. I am once again sorry

**MEDIA**

I have a right to protect my child!!

**MEDIA**

sorry I only posted this once... technical fault.. :( sorry my kids use this ..you guys are great I am really astonished by the ads though

**MEDIA**

can someone please explain why there are advertisement on the webpage, which are very interrupting...like dating women.. whoever set this programme up can you please get rid of it as this is for educational purposes not for promoting sexual preferences!!

**media**

if it helps my child's education, then yes!!

**media**

I really don't think this ads thing is a good idea. my children use this and I really don't want them to be promoted by such disgraceful things!! I help them as much as I can but this website helps them as well. please do something!!

**science**

*to humanns

**science **

5 facts on how Ultraviolet ray,X-rays and gamma rays are dangerous to and their sources.

**Music**

How does music affect a musical?

**Science **

Determine the frequency of a microwave 6.0 cm in length.( A microwave is an electromagnetic wave.It travels through space at a speed of 3.0 x 10 ^8 m/s)

**Science >.<**

if a wave is traveling at 60cm/second and has a wavelength of 15cm what is the frequency? Please explaine

**Math...help**

thanks a lot bobpursely & jai :)

**Math...help**

so you take away got it!

**Math...help**

so, e)38e+18 f)16f+15 right?

**Math...help**

are the rest correct

**Math...help**

I get confused when the plus and minus clash

**Math...help**

remove the brackets and simplify questions a) 3(2a+5)+2(a+7) b) 5(b+4)+10b c) 4(2c+3)+3(c-3) d) 8+6(d-2) e) 6(5e+3)-4(2e+3) f) 5(3f+2)-(f-5) MY ANSWERS a)6a+15+2a+14 8a+29 b)5b+20+10b 15b+20 c)8c+12+3c-9 11c-3 d)8+6d-12 I need to simplify more...how? e)30e+18-8e I need to simp...

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